public class Test {
    public static void main(String[] args) {
        char ch1 = 'a';
        System.out.println(ch1);
        char ch2 = '美';
        System.out.println(ch2);
    }


    public static void main5(String[] args) {
        float f = 12.5f;
//        System.out.println(Integer);
    }
//    public static void main(String[] args) {
////        double d = 1.1;
////        System.out.println(d*d);
//        long a = 10;
//        float d = 12.5;
//    }


    public static void main4(String[] args) {
//        double d = 12.500;
//        System.out.println(d);
//        System.out.printf("%.2f",d);
    }


    public static void main3(String[] args) {
        int a = 1;
        int b = 2;
        System.out.println(1.0*a/b);
    }


    public static void main2(String[] args) {
        double d = 12.5;
        System.out.println(d);
    }
    public static void main1(String[] args) {
        //1个字节 8个bit位
        byte a = 10;
        System.out.println(a);
        System.out.println(Byte.MAX_VALUE);
        System.out.println(Byte.MIN_VALUE);
    }
}
